Monorail Transport System (6990): parts list and STL files

Set 6990, Monorail Transport System, from 1988, has 731 pieces in 172 kinds of part and colour. Here is every part, with the ones you can 3D print at home and the ones to buy.

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Free: an STL file for every part you can print, the parts list and a BrickLink shopping list for the rest. Pro adds print-ready plates for a 256 mm bed and our printing guide. About ProYour Pro includes the print-ready plates.

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Monorail Transport System, built (3D picture) — What it looks like built. A 3D picture, not a photo, made from the LDraw model by Damien Roux (CC BY 2.0).

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553to print

178to buy

0spares

172kinds

553 to print, 178 to buy, 0 spares. Print: plain bricks, plates and beams you can make on a home 3D printer. Buy: clear, printed, rubber, electric and very thin parts, which are better ordered. Spares are the extras in the box.

Every part in set 6990

Parts in set 6990, Monorail Transport System
Colour	Part	Qty	Print or buy
White	3023 Plate 1 x 2	45	Print
White	3710 Plate 1 x 4	25	Print
Light Gray	3710 Plate 1 x 4	24	Print
White	3004 Brick 1 x 2	23	Print
White	4865a Panel 1 x 2 x 1 [Square Corners]	20	Print
White	4740 Dish 2 x 2 Inverted [Radar]	16	Print
Black	3022 Plate 2 x 2	15	Print
White	3069b Tile 1 x 2 with Groove	14	Print
Black	3069b Tile 1 x 2 with Groove	12	Print
White	3937 Hinge Brick 1 x 2 Base	12	Print
White	3938 Hinge Brick 1 x 2 Top Plate Thin	12	Print
Black	3941 Brick Round 2 x 2 with Axle Hole	12	Print
White	3460 Plate 1 x 8	10	Print
White	3795 Plate 2 x 6	9	Print
White	4162 Tile 1 x 8 with Groove	9	Print
Black	2681 Support 6 x 6 x 10 Stanchion	8	Print
Black	3003 Brick 2 x 2	8	Print
Black	3004 Brick 1 x 2	8	Print
White	3832 Plate 2 x 10	8	Print
White	3940b Support Round 2 x 2 x 2 Stand with Reach-Through Center Hole	8	Print
Black	4032a Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	8	Print
White	4081b Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]	8	Print
Black	4081b Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]	8	Print
White	3022 Plate 2 x 2	7	Print
White	3034 Plate 2 x 8	7	Print
White	3068b Tile 2 x 2 with Groove	6	Print
Black	3794a Plate Special 1 x 2 with 1 Stud without Groove (Jumper)	6	Print
White	3956 Bracket 2 x 2 - 2 x 2	6	Print
White	4596 Plate Special 1 x 2 with Long Stud Receptacle (Space Wing)	6	Print
White	3010 Brick 1 x 4	5	Print
Black	3010 Brick 1 x 4	5	Print
Black	3023 Plate 1 x 2	5	Print
White	2357 Brick 2 x 2 Corner	4	Print
White	2420 Plate 2 x 2 Corner	4	Print
Black	2436 Bracket 1 x 2 - 1 x 4 [Square Corners]	4	Print
White	2449 Brick Sloped Inverted 75° 2 x 1 x 3	4	Print
White	3003 Brick 2 x 2	4	Print
White	3005 Brick 1 x 1	4	Print
Black	3005 Brick 1 x 1	4	Print
White	3008 Brick 1 x 8	4	Print
White	3009 Brick 1 x 6	4	Print
White	3039 Brick Sloped 45° 2 x 2	4	Print
Black	3040b Brick Sloped 45° 2 x 1 with Bottom Pin	4	Print
Black	3623 Plate 1 x 3	4	Print
White	3665 Brick Sloped Inverted 45° 2 x 1	4	Print
White	3960 Dish 4 x 4 Inverted [Radar]	4	Print
Black	4070 Brick Special 1 x 1 with Headlight	4	Print
White	4275b Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs]	4	Print
White	4276b Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs	4	Print
White	4460a Brick Sloped 75° 2 x 1 x 3 with Open Stud	4	Print
White	4589 Cone 1 x 1 [No Top Groove]	4	Print
Black	4595 Brick Special 1 x 2 x 2/3 with Studs on Sides	4	Print
Black	3009 Brick 1 x 6	3	Print
Black	3035 Plate 4 x 8	3	Print
White	3070b Tile 1 x 1 with Groove	3	Print
Black	3710 Plate 1 x 4	3	Print
White	3941 Brick Round 2 x 2 with Axle Hole	3	Print
White	4285a Dish 6 x 6 Inverted, Radar / Webbed [No Anti-studs]	3	Print
White	2401 Wedge Plate 10 x 10 with 4x4 Cutout and Cut Corner	2	Print
White	2428 Rack 1 x 20 x 2/3	2	Print
Black	2431 Tile 1 x 4 with Groove	2	Print
White	2436 Bracket 1 x 2 - 1 x 4 [Square Corners]	2	Print
White	2448 Panel 3 x 2 x 5 2/3	2	Print
White	2450 Wedge Plate 3 x 3 Cut Corner	2	Print
Black	2680 Support 4 x 4 x 5 Stanchion, Tall Studs	2	Print
Black	3002 Brick 2 x 3	2	Print
Black	3021 Plate 2 x 3	2	Print
White	3024 Plate 1 x 1	2	Print
White	3037 Brick Sloped 45° 2 x 4	2	Print
Black	3062b Brick Round 1 x 1 Open Stud	2	Print
White	3623 Plate 1 x 3	2	Print
White	3660 Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]	2	Print
Black	3666 Plate 1 x 6	2	Print
Light Gray	3679 Turntable 2 x 2 Plate - Top	2	Print
White	3684 Brick Sloped 75° 2 x 2 x 3 [Hollow Studs]	2	Print
White	3794a Plate Special 1 x 2 with 1 Stud without Groove (Jumper)	2	Print
Light Gray	3941 Brick Round 2 x 2 with Axle Hole	2	Print
White	4032a Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	2	Print
White	4035 Window 1 x 2 x 3 Train	2	Print
White	4070 Brick Special 1 x 1 with Headlight	2	Print
Black	4162 Tile 1 x 8 with Groove	2	Print
White	4315 Hinge Vehicle Roof Holder 1 x 4	2	Print
White	4477 Plate 1 x 10	2	Print
Black	4589 Cone 1 x 1 [No Top Groove]	2	Print
Black	4590 Plate Special 1 x 4 Offset with Bar Holes	2	Print
Black	4623 Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm]	2	Print
White	4871 Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed	2	Print
Black	2357 Brick 2 x 2 Corner	1	Print
Black	2422 Bracket 2 x 2 - 1 x 4	1	Print
White	2426c01 Rack Winder [Complete Assembly]	1	Print
Black	2426c01 Rack Winder [Complete Assembly]	1	Print
White	2431 Tile 1 x 4 with Groove	1	Print
Black	3001 Brick 2 x 4	1	Print
White	3020 Plate 2 x 4	1	Print
Black	3020 Plate 2 x 4	1	Print
White	3021 Plate 2 x 3	1	Print
Black	3039 Brick Sloped 45° 2 x 2	1	Print
Black	3068b Tile 2 x 2 with Groove	1	Print
Black	3298 Brick Sloped 33° 3 x 2	1	Print
Black	3680 Turntable 2 x 2 Plate, Base	1	Print
White	3680 Turntable 2 x 2 Plate, Base	1	Print
White	3738 Plate 2 x 8 [7 Holes]	1	Print
Black	3940b Support Round 2 x 2 x 2 Stand with Reach-Through Center Hole	1	Print
Black	4175 Plate Special 1 x 2 with Ladder	1	Print
Black	4282 Plate 2 x 16	1	Print
Black	4477 Plate 1 x 10	1	Print
Black	4598 Bracket 3 x 2 - 2 x 2 [aka Space Seat]	1	Print
White	4598 Bracket 3 x 2 - 2 x 2 [aka Space Seat]	1	Print
White	73983 Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly]	1	Print
Trans-Red	6141 Plate Round 1 x 1 with Solid Stud	10	Buy
Trans-Red	3024 Plate 1 x 1	8	Buy
Trans-Red	4589 Cone 1 x 1 [No Top Groove]	8	Buy
Trans-Dark Blue	4589 Cone 1 x 1 [No Top Groove]	8	Buy
White	3069bpr0023 Tile 1 x 2 with Arrow Long Yellow with Black Border Print	6	Buy
White	4476b Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts]	6	Buy
Trans-Dark Blue	6141 Plate Round 1 x 1 with Solid Stud	6	Buy
Trans-Red	4740 Dish 2 x 2 Inverted [Radar]	5	Buy
Trans-Dark Blue	2447 Headwear Accessory Visor For Standard Helmet	5	Buy
Yellow	3626apr0001 Minifig Head Standard Grin Print [Solid Stud]	5	Buy
Light Gray	2672 Vehicle Track, Monorail Curve Long	4	Buy
Black	298c02 Lever Small Base with Black Lever	4	Buy
Trans-Red	3062b Brick Round 1 x 1 Open Stud	4	Buy
Black	3957a Antenna 1 x 4 with Rounded Top	4	Buy
Black	4229 Engine, Strakes, 2 x 2 Thin Top Plate	4	Buy
Black	4735 Bar 1 x 3 [Clip / Anti-Stud]	4	Buy
Trans-Dark Blue	4864a Panel 1 x 2 x 2 [Solid Studs]	4	Buy
White	73590c01a Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube)	4	Buy
White	2342 Equipment Control Panel	3	Buy
Yellow	2446 Helmet, Standard	3	Buy
Yellow	3838 Minifig Neckwear Airtanks	3	Buy
Yellow	970c01 Hips and Yellow Legs	3	Buy
White	973c01h01pr0006 Torso, Classic Space Logo, Futuron Yellow Print, Yellow Arms and Hands	3	Buy
Trans-Dark Blue	2409 Panel 10 x 10 x 12 Quarter Dome	2	Buy
Trans-Dark Blue	2448 Panel 3 x 2 x 5 2/3	2	Buy
Light Gray	2671 Vehicle Track, Monorail Track Straight Long	2	Buy
Light Gray	2677 Vehicle Track, Monorail Ramp Lower Part	2	Buy
Light Gray	2678 Vehicle Track, Monorail Track Ramp Upper Part	2	Buy
Black	2686c01 Wheel Holder, Monorail Bogey with Bogey Bracket/Pivot	2	Buy
Black	2687 Vehicle Base, Monorail 4 x 20	2	Buy
Light Gray	2774 Vehicle Track, Monorail Monoswitch	2	Buy
White	3004pr9981 Brick 1 x 2 with Black Grill Print	2	Buy
White	3039pr9996 Brick Sloped 45° 2 x 2 with 12 Buttons, 3 Red Lamps, Black Panel Print	2	Buy
White	3040bpr0010 Brick Sloped 45° 2 x 1 with 9 Large + 3 Small Black Buttons Print	2	Buy
White	3068bpr0031 Tile 2 x 2 with Grill Black Print	2	Buy
White	3068bpr0032 Tile 2 x 2 with Arrow Thin Yellow with Black Border Print	2	Buy
Trans-Red	3957a Antenna 1 x 4 with Rounded Top	2	Buy
Trans-Dark Blue	3957a Antenna 1 x 4 with Rounded Top	2	Buy
White	3957a Antenna 1 x 4 with Rounded Top	2	Buy
Light Gray	4150pr0016 Tile Round 2 x 2 with Yellow Arrow with Black Border Print	2	Buy
Trans-Dark Blue	4474 Windscreen 6 x 4 x 2 Canopy	2	Buy
Black	4476b Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts]	2	Buy
Black	73590c01a Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube)	2	Buy
Blue	2446 Helmet, Standard	2	Buy
Blue	3838 Minifig Neckwear Airtanks	2	Buy
Blue	970c28 Hips and Blue Legs	2	Buy
White	973c28h28pr0006 Torso, Classic Space Logo, Futuron Blue Print, Blue Arms and Hands	2	Buy
Trans-Dark Blue	2337 Windscreen 4 x 4 x 2 Canopy Extender, Hinge	1	Buy
Trans-Dark Blue	2408 Panel 10 x 6 x 11	1	Buy
White	2684c01a Motor, Monorail 9V with Short Couplings [Complete Assembly]	1	Buy
White	3070bpr0031 Tile 1 x 1 with Red and Black Buttons Print	1	Buy
White	3070bpr0039 Tile 1 x 1 with Computer Targeting Display Print	1	Buy
Light Gray	3811 Baseplate 32 x 32	1	Buy
Light Gray	3857 Baseplate 16 x 32	1	Buy
Black	3959 Weapon Gun / Torch (Space) [with Grooves]	1	Buy
Black	3962a Equipment Radio [Compact Handle]	1	Buy
Black	4006 Tool Screwdriver and Spanner / Wrench	1	Buy
Black	4360 Equipment Camera with Side Sight [aka Space Gun]	1	Buy
Trans-Dark Blue	4740 Dish 2 x 2 Inverted [Radar]	1	Buy
White	4760c01pr0001 Battery Box, 9V Small [Complete Assembly] with '9V' Print	1	Buy
White	4767 Light Brick 1 x 2 [Single Bulb]	1	Buy
Trans-Red	4770 Brick Round 1 x 1 x 2/3 Light Bulb Cover	1	Buy
Black	5306ac015 Wire with Brick 2 x 2 x 1/3 Pair, 15L	1	Buy

Print set 6990 at home

The set tool makes an STL file for each of the 553 printable pieces, sorted by colour, plus a shopping list for the 178 to buy. Free, no account, and it runs on your own phone or computer.

Get the free print files

Pro adds print-ready plates for a 256 mm bed. About Pro

Parts data: Rebrickable, and it can differ slightly from your box. Part shapes: LDraw Parts Library (CC BY 4.0). Browse all sets. Independent project, not sponsored, authorised or endorsed by any brick company.